CVE-2021-44709 : Exploit Details and Defense Strategies
Learn about CVE-2021-44709 affecting Adobe Acrobat Reader DC. Find details on the impact, vulnerability description, affected systems, exploitation, and mitigation steps.
Adobe Acrobat Pro DC Heap Overflow Vulnerability could lead to arbitrary code execution.
Understanding CVE-2021-44709
Acrobat Reader DC versions 21.007.20099, 20.004.30017, and 17.011.30204 are affected by a heap overflow vulnerability due to insecure file handling.
What is CVE-2021-44709?
Adobe Acrobat Pro DC is susceptible to a heap overflow flaw, allowing attackers to execute arbitrary code by exploiting a crafted file, requiring user interaction to open the malicious file.
The Impact of CVE-2021-44709
- CVSS Base Score: 7.8 (High Severity)
- Attack Vector: Local
- Attack Complexity: Low
- Impact: High impact on Availability, Confidentiality, and Integrity
- User Interaction: Required
Technical Details of CVE-2021-44709
Acrobat Reader DC is vulnerable to a heap overflow issue, potentially resulting in arbitrary code execution.
Vulnerability Description
The vulnerability arises from insecure handling of crafted files, leading to a heap overflow and enabling arbitrary code execution within the user's context.
Affected Systems and Versions
- Affected Versions: 21.007.20099, 20.004.30017, 17.011.30204
- All prior versions are also vulnerable
Exploitation Mechanism
The exploit necessitates a victim to open a malicious file, triggering the heap overflow vulnerability and granting the attacker the ability to execute arbitrary code.
Mitigation and Prevention
Immediate actions and long-term security practices can help mitigate the risk of exploitation.
Immediate Steps to Take
- Update Adobe Acrobat Reader to the latest version to patch the vulnerability.
- Avoid opening untrusted PDF files or documents from unknown sources.
- Educate users on safe browsing habits and file handling practices.
Long-Term Security Practices
- Implement security awareness training for employees regarding phishing attacks and malicious file handling.
- Regularly update and patch all software and applications to address security vulnerabilities.
- Utilize endpoint protection solutions to detect and prevent potential threats.
Patching and Updates
- Adobe has released security updates to address the vulnerability. Ensure all systems running Acrobat Reader are updated to the latest version.